JP2017135515A - Imaging apparatus and control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable even a photographer who is unfamiliar with follow shot shooting to easily set a shutter speed at which a follow shot shooting effect can be obtained.SOLUTION: The imaging apparatus includes: an imaging unit (159) for imaging a subject image incident through an imaging optical system; an operation unit (165) for setting a flow amount of a background in a follow shot shooting; and acquisition means (168) for acquiring an exposure time of the imaging unit from an angular velocity detected by an angular velocity detecting section for detecting an angular velocity of deflection and a focal length of the imaging optical system so as to be a flowing amount of the background set by the operation unit in the follow shot shooting.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an imaging apparatus and a control method thereof, and more particularly to control of an imaging apparatus during panning shooting.

  One of the camera shooting methods is panning. This is a method of shooting while moving the camera following the movement of a moving subject. In general, shooting is performed at a slow shutter speed in order to give the subject a sense of liveliness.

  However, skill is required to capture and follow the subject (for example, a train moving at 60 km / h) well while shaking the camera at a long shutter speed (for example, 1/30 second). Especially for beginners, it is difficult to match the speed of the subject and the speed of shaking the camera during the exposure period with a long shutter speed, so panning is a difficult shooting technique.

  In general, a good example of panning shooting is an image in which the subject is stationary and the background is flowing in the direction opposite to the moving direction of the subject. In order to take a still image of such a subject, Patent Document 1 detects a difference between the speed of the subject and the speed at which the camera is shaken, and corrects a shift amount corresponding to the difference using a camera shake correction function. A method is disclosed. In this method, immediately before shooting, an angular velocity with respect to panning (or tilting) of a camera tracking the subject is detected by an angular velocity sensor in the camera. At the same time, the amount of movement of the main subject image on the imaging surface is detected. The angular velocity of the subject is calculated from the detected panning speed and the amount of movement of the subject image on the imaging surface. During exposure, an image blur correction operation is performed according to the difference between the calculated angular velocity of the main subject and the angular velocity sensor output in the camera. As a result, the difference between the main subject and the panning speed of the camera (subject shake amount) and the amount of camera shake are corrected, so that image shake of the main subject that is the subject of panning can be suppressed.

JP 2006-317848 A

  However, it is difficult for a beginner to set an appropriate shutter speed for capturing an image in which the background flows in an appropriate amount in the direction opposite to the moving direction of the subject. This is understood from experience because the shutter speed is determined based on the subject speed, the focal length of the photographing lens, the photographing distance to the subject, and the panning (or tilting) speed of the photographer himself.

  If the shutter speed is too high, the subject will not shake easily, but the background will not flow, so the subject will not feel lively and is not sufficient as an example of panning. On the other hand, if the shutter speed is set too low, the background will flow, but the exposure will be long, so the subject will easily shake due to camera shake and will likely fail as a result.

  The present invention has been made in view of the above-described problems, and an object thereof is to make it possible to easily set a shutter speed at which a panning effect can be obtained even by a photographer who is not familiar with panning.

  In order to achieve the above object, an imaging apparatus according to the present invention includes an imaging unit that captures a subject image incident through an imaging optical system, a setting unit that sets a background sink amount in panning shooting, and a panning shooting. In the exposure of the imaging means, the angular velocity detected by the detecting means for detecting the angular velocity of the shake and the focal length of the imaging optical system so as to be the amount of background flow set by the setting means Acquisition means for acquiring time.

  According to the present invention, even a photographer unfamiliar with panning can easily set a shutter speed at which a panning effect can be obtained.

1 is a block diagram showing a functional configuration of an imaging apparatus according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a functional configuration of an image blur correction system according to the present invention. 4 is a control flowchart at the time of shooting in the present invention. 7 is a flowchart of shutter speed calculation processing during panning shooting according to the present invention. The figure for demonstrating the relationship between the angular velocity with respect to the flow amount of the background in this invention, and a shutter speed. The figure for demonstrating the drive range of the shake correction part in this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram illustrating a functional configuration of an imaging apparatus including an image shake correction system according to an embodiment of the present invention. In the present embodiment, a digital camera capable of capturing a still image will be described as an imaging apparatus. However, the present invention is not limited to a digital camera, and may be applied to an imaging apparatus such as a monitoring camera, a Web camera, or a mobile phone. be able to.

  In FIG. 1, the imaging optical system includes a zoom unit 151 including a zoom lens that performs zooming, an aperture / shutter unit 153, a shake correction unit 112, and a focus unit 157 including a lens that performs focus adjustment. The zoom unit 151 is drive-controlled by the zoom drive control unit 152, the aperture / shutter unit 153 is drive-controlled by the aperture / shutter drive control unit 154, and the focus unit 157 is drive-controlled by the focus drive control unit 158.

  The shake correction system drive unit 111 is a voice coil type motor for driving the shake correction unit 112, and is driven by the shake correction system drive unit 111 to move the shake correction unit 112 in a direction perpendicular to the optical axis. The The shake correction system position detection unit 113 includes a magnet and a hall sensor provided at a position opposite to the magnet. The shake correction system position detection unit 113 detects the amount of movement of the shake correction unit 112 in the direction perpendicular to the optical axis. The data is supplied to the above-described subtracter 108 via the D converter 114. The shake correction unit 112 is, for example, a shift lens, and is a correction system capable of optical shake correction that shifts the optical axis when moved in a direction perpendicular to the optical axis. Alternatively, the imaging unit 159 may be moved in a direction perpendicular to the optical axis. As a result, an image in which the movement of the subject on the imaging surface caused by the shake of the apparatus is corrected is formed on the imaging unit 159.

  The imaging unit 159 photoelectrically converts the subject image incident via the imaging optical system described above into an electrical signal. The electrical signal output from the imaging unit 159 is converted into a video signal by the imaging signal processing unit 160 and further processed by the video signal processing unit 161 according to the application. The display unit 162 displays an image as necessary based on the signal output from the video signal processing unit 161.

  The power supply unit 163 supplies power to the entire imaging apparatus according to the application. The external input / output terminal unit 164 inputs / outputs communication signals and video signals to / from an external device (not shown).

  The operation unit 165 is used to operate the system, and includes an image stabilization ON / OFF switch, a shutter release button, a moving image recording switch, a reproduction mode selection switch, a magnification switch, and a panning mode setting switch.

  The anti-shake ON / OFF switch makes it possible to select ON / OFF of the camera shake correction. When the camera shake correction ON is selected by the anti-shake ON / OFF switch, the camera system control unit 168 causes the shake correction system driving unit 111 to vibrate. Instruct the work. Then, the shake correction system driving unit 111 that has received this performs the image stabilization operation until a camera shake correction OFF instruction is given.

  The shutter release button is configured to be operable in two stages so that the first switch (SW1) and the second switch (SW2) are sequentially turned on according to the amount of pressing. A structure in which the first switch SW1 is turned on when the shutter release button is pressed halfway (first stage), and the second switch SW2 is turned on when the shutter release button is pushed down to the end (second stage). It has become. When the first switch SW1 is turned on, the focus drive control unit 158 drives the focus unit 157 to perform focus adjustment, and the aperture / shutter drive control unit 154 drives the aperture / shutter unit 153 to obtain an appropriate exposure amount. Set to. When the second switch SW <b> 2 is turned on, image data obtained from the light image exposed to the imaging unit 159 is stored in the storage unit 166.

  The moving image recording switch starts moving image shooting when the switch is pressed, and ends the recording when the switch is pressed again during recording. By pressing the first switch SW1 and the second switch SW2 during moving image shooting, it is possible to support still image shooting during moving image recording.

  When the playback mode selection switch is pressed, the playback mode is selected. Note that the image stabilization operation is stopped in the playback mode.

  The zoom switch is a switch for instructing zoom zoom. When an instruction for zooming / magnifying is performed by the zooming switch, the zoom drive control unit 152 that has received the instruction via the camera system control unit 168 drives the zoom unit 151 to move the zoom unit 151 to the instructed zoom position. Move. At the same time, the focus drive control unit 158 drives the focus unit 157 to perform focus adjustment based on the image information processed by the imaging signal processing unit 160 and the video signal processing unit 161 sent from the imaging unit 159.

  The panning mode setting switch enables ON / OFF of the panning mode, and when panning is selected, an image stabilization operation suitable for panning and a shutter speed suitable for panning are set.

  The storage unit 166 stores various data such as video information. The angular velocity detection unit 102 is an angular velocity sensor that detects the amount of camera shake applied to the camera as an angular velocity using a sensor such as a gyro sensor and outputs a shake signal (angular velocity data) converted into a voltage. The camera system control unit 168 controls the entire imaging apparatus. The motion vector detection unit 116 detects a motion vector of an image based on the luminance signal included in the current video signal generated by the imaging signal processing unit 160 and the luminance signal included in the video signal one frame before. .

  FIG. 2 is a block diagram showing a functional configuration of an image blur correction system mounted on the digital camera shown in FIG. In the following description, description will be given regarding shake correction control in either the yaw direction or the pitch direction of the image, and the shake correction control in the other direction is the same, and thus the description thereof is omitted.

  Angular velocity data output from the angular velocity detector 102 is supplied to a high-pass filter (HPF) 103 in the μCOM 101 configured in the camera system controller 168. The HPF 103 has a function of changing its characteristics in an arbitrary frequency band, and outputs a signal in a high frequency band after blocking a low frequency component included in the angular velocity data. Instead of the HPF 103, a signal obtained by passing a low-pass filter (LPF) that blocks a signal in a high frequency band from the output of the angular velocity detection unit 102 may be subtracted from the output of the angular velocity detection unit 102. .

  The gain / phase characteristic calculation unit 104 includes an amplifier that amplifies the output of the HPF 103 that is input data with a predetermined gain, and a phase compensation filter.

  The focal length calculation unit 105 calculates the focal length of the imaging optical system from the zoom information indicating the state of the zoom lens output from the zoom drive control unit 152, and becomes an optimum value for driving the shake correction unit 112. Thus, the output of the gain / phase characteristic calculation unit 104 is corrected.

  On the other hand, the motion vector output from the motion vector detection unit 116 is supplied to the subject vector detection unit 117. In addition, the subject vector detection unit 117 inputs the amount of image plane movement on the imaging surface converted from the angular velocity obtained by removing the offset component from the output of the angular velocity detection unit 102 by the offset removal unit 115. Then, using the input image plane movement amount, a motion vector in the screen is separated into a subject vector and a background vector. The offset removing unit 115 may use the average value of the angular velocity detection unit 102 when the camera is in a static state as the offset component, or the background one frame before detected by the subject vector detection unit 117. A value obtained by converting a vector into an angular velocity may be used. As a method for separating a motion vector into a subject vector and a background vector, for example, a known method such as a method described in JP-A-2015-161730 can be used.

  The subject angular velocity calculation unit 118 converts the subject vector output from the subject vector detection unit 117 into the subject angular velocity using information on the focal length and the frame rate included in the zoom information. The subtractor 119 subtracts the angular velocity of the image blur correction device, which is the output of the offset removing unit 115, from the subject angular velocity calculated by the subject angular velocity calculating unit 118, that is, calculates the differential angular velocity between the subject and the camera.

  The switch 106 for selecting the target signal of the shake correction unit 112 is configured to output the output of the focal length calculation unit 105 and the subtractor based on the ON / OFF information of the panning mode selected by the panning mode setting switch of the operation unit 165. The output of 119 is switched. When the panning mode is ON, the switch 106 supplies an output signal of a subtractor 119 described later to the integrator 107 to perform subject shake correction for correcting subject shake. On the other hand, when the panning mode is OFF, the switch 106 supplies the output of the focal length calculation unit 105 to the integrator 107 and performs camera shake correction for correcting the shake of the entire image.

  In addition to setting with the panning mode setting switch, the yaw direction and pitch direction outputs from the angular velocity detection unit 102 may be compared to determine whether the panning mode is ON / OFF. In this case, for example, if the output of the one-axis angular velocity detection unit 102 is larger than that of the other-axis angular velocity detection unit 102 (for example, 10 dps or more), the panning (or tilting) state is determined and the panning mode is determined to be ON. To do. Note that, even in the panning mode, the switch 106 is controlled to select the output of the focal length calculation unit 105 when a subject vector described later cannot be detected.

  The integrator 107 has a function of changing its characteristics in an arbitrary frequency band, integrates the output of the switch 106, and calculates the drive amount of the shake correction unit 112.

  The subtractor 108 digitizes the signal indicating the position of the shake correction unit 112 output from the shake correction system position detection unit 113 by the A / D converter 114 from the output of the integrator 107. Data is subtracted and supplied to the controller 109.

  The controller 109 includes an amplifier that amplifies input data with a predetermined gain, and a phase compensation filter. The deviation data supplied from the subtracter 108 is subjected to signal processing by an amplifier and a phase compensation filter in the controller 109 and then output to the pulse width modulator 110.

  The pulse width modulation unit 110 modulates the data supplied through the controller 109 into a waveform (that is, a PWM waveform) that changes the duty ratio of the pulse wave, and supplies the modulated data to the shake correction system driving unit 111.

Next, a method for setting the shutter speed (exposure time) during panning shooting will be described. The shutter speed at the time of panning shooting is obtained by the following equation (1).
Tv = α / (f × ω) (1)
Here, Tv: shutter speed, f: focal length, ω: angular velocity, α: background flow amount.

  The denominator on the right side of Equation (1) is the product of the focal length f of the photographic lens and the angular velocity ω of the camera, and this value represents the background flow velocity on the imaging surface. The shutter speed Tv at the time of panning is calculated so that the background sink amount is always constant regardless of the angular speed ω of the camera. In the present embodiment, the background sink amount α can be changed by the operation unit 165 on the screen of the display unit 162 so that the photographer can set the background sink amount. This is because, for example, there are some photographers who think that 100 pixels is the optimum amount of background flow, and there are other photographers who think that 300 pixels are optimum, and the preference of the amount of background flow varies depending on the photographer. Also, you can make the background sink amount according to your preference.

  Next, a control flow at the time of panning shooting in this embodiment will be described with reference to FIG.

  First, in S101, it is determined whether or not the camera shake correction is ON. If the camera shake correction is ON, the process proceeds to S102, and if not, the process proceeds to S119. In S102, it is determined whether or not the panning mode is ON as described above. If the panning mode is ON, the process proceeds to S103, and if the panning mode is not ON, the process proceeds to S112.

  In S103, the motion vector detection unit 116 detects the motion vector of the entire screen. Next, in S104, an average value of the angular velocities between the exposure centroids, which is between the centroids of the exposure times in each of the two frames, is acquired from the angular velocities output from the angular velocity detection unit 102. Here, the average value of the angular velocities between the exposure centroids is obtained because the motion vector detection unit 116 detects a difference vector between frames between the exposure centroids at the time of imaging. Thereby, in S107, which will be described later, it is possible to synchronize when creating a histogram of the output of the motion vector detection unit 116 and the image plane movement amount on the imaging surface calculated from the output of the angular velocity detection unit 102.

  In S105, the offset component is removed from the average value of the angular velocities between the exposure centroids obtained in S104. The reason for removing the offset component is to prevent erroneous detection of the subject vector due to the offset of the image plane movement amount converted from the angular velocity by the amount of offset convolution in subject vector calculation described later. In S106, the average value of the angular velocities between the exposure centroids, from which the offset component has been removed in S105, is converted into an image plane movement amount on the imaging plane using the frame rate and focal length information.

  Next, in S107, a histogram is created from the motion vector detected in S103. For example, if the setting of the number of detection blocks used by the motion vector detection unit 116 is 6 vertical and 10 horizontal, a histogram including a total of 60 motion vectors is created. In addition, the image plane movement amount of the imaging surface calculated in S106 is used to create the histogram. Here, since the number of angular velocity data acquired in one frame is one, a predetermined range (for example, ± 10 pix) is set as the threshold value of the background range around the image plane movement amount on the imaging surface converted from the angular velocity.

  In S108, it is determined whether the subject vector can be detected from the histogram created in S107. If the subject vector can be detected, the process proceeds to S109, and if the subject vector cannot be detected, the process proceeds to S112.

  Next, in S109, a vector within a certain range from the image plane movement amount calculated on S106 in S106 is set as a background vector candidate, and a vector outside the certain range is set as a subject vector candidate. Then, an average value is calculated using the vicinity of the highest frequency vector among the subject vector candidates as a subject vector. In S110, the subject angular velocity calculation unit 118 converts the subject vector calculated in S109 into a subject angular velocity using the frame rate and focal length information, and an image blur correction device that is an output of the offset removal unit 115 by the subtractor 119. The angular velocity of is subtracted. In S111, the subject angular velocity calculated in S110 is integrated to calculate a correction signal for subject shake correction.

  On the other hand, in S112, since the subject vector is not detected even in the panning mode or in the panning mode, the angular velocity is acquired from the angular velocity detecting unit 102 in order to perform normal camera shake correction. In S104, the average value of the angular velocities between the exposure centroids is acquired, whereas in S112, the angular velocities are acquired not at an average of the angular velocities between the exposure centroids but at a constant interruption period (for example, 4 kHz sampling).

  In S <b> 113, the offset component is superimposed on the output of the angular velocity detection unit 102, so the offset component is removed through the HPF 103. Next, in S114, a gain / phase characteristic calculation unit configured with an amplifier that amplifies with a predetermined gain and a phase compensation filter so that the output of the angular velocity detection unit 102 from which the offset component has been removed has a desired frequency characteristic. 104.

  In S <b> 115, the focal length calculation unit 105 calculates the focal length of the imaging optical system, and corrects the output of the gain / phase characteristic calculation unit 104 so as to be an optimum value for driving the shake correction unit 112. In S116, the value calculated in S115 is integrated to calculate a correction signal for camera shake correction. Next, in S117, it is determined again whether the panning mode is ON. If the panning mode is ON, the process proceeds to S118, and if the panning mode is not ON, the process proceeds to S119.

  Next, in S118, an optimum shutter speed at the time of panning shooting is calculated. Details of this processing will be described later with reference to the flowchart of FIG.

  In S119, it is determined whether or not the photographer has pressed the shutter release button. If the shutter release button has been pressed, the process proceeds to S120, and if the shutter release button has not been pressed, the process returns to S101 and the above-described processing is repeated.

  On the other hand, in S120, the shake correction system is driven based on the subject shake correction signal calculated in S111 or the shake correction signal calculated in S116 in accordance with the determination in S108. In S121, in the case of the panning mode, the exposure is performed at the shutter speed at the time of panning shooting calculated in S118. In other cases, the exposure is performed at the shutter speed based on the exposure value obtained by the normal photometry processing. To finish the shooting process.

  Next, the shutter speed calculation processing at the time of panning shooting performed in S118 will be described with reference to the flowchart of FIG.

  First, in step S <b> 201, an angular velocity is acquired from the angular velocity detection unit 102. The angular velocity at the time of calculating the shutter velocity may be an average value of the angular velocities between the exposure centroids as in S104, or may be an angular velocity acquired at a constant interruption period (for example, 4 kHz sampling) as in S112. Since the offset component is superimposed on the angular velocity detected in S201, and the offset is superimposed, a shutter speed calculation error is generated. Therefore, in S202, the offset component is removed in the same manner as in S105 or S113.

  In S203, the focal length is acquired from the zoom information. In S204, the set value of the background flow amount is determined. In the present embodiment, the amount of background flow is set to three (small, medium, and large), and is set by the photographer using the operation unit 165 on the screen of the display unit 162 before photographing. If the background sink amount is set to “medium”, the process proceeds to S205, and if it is set to other than “medium”, the process proceeds to S206. In the present embodiment, the number of setting of the background flow amount is set to three levels, but of course, it may be three or more levels (a plurality of levels), or an arbitrary value may be set as the background flow amount. Since the background flow amount is set to “medium” in S205, the background flow amount α is set to α1 (for example, the image plane movement amount 100 pix on the imaging surface).

  In S206, it is determined whether the background sink amount is “small”. If the background sink amount is set to “small”, the process proceeds to S207. If the background sink amount is not set to “small” (that is, the background sink amount is “large”), the process proceeds to S208. Since the background sink amount is set to “small” in S207, the background sink amount α is set to α2 (for example, on the imaging surface so that the image plane movement amount on the imaging surface is smaller than in the case of “medium”. Image plane movement amount 70 pix).

  Since the background sink amount is set to “large” in S208, the background sink amount α is set to α3 (for example, on the imaging surface so that the image plane movement amount on the imaging surface is larger than in the case of “medium”. Image plane movement amount of 300 pix).

  In S209, based on the equation (1), the shutter speed Tv at the time of panning that always becomes the background sink amount α is calculated regardless of the panning (or tilting) speed.

  In S210, it is determined whether the shutter speed Tv calculated in S209 is less than a preset threshold value β (for example, 1/15 seconds). If it is less than the threshold, the process proceeds to S212, and if it is greater than or equal to the threshold, the process proceeds to S211. That the shutter speed Tv calculated in S209 is equal to or higher than the threshold value β is a case where long-second exposure appears. For example, if the exposure time is longer than 1 second, the risk of camera shake during the exposure period increases, and thus the calculated shutter speed Tv is limited to the low speed limit value (threshold value β) in S211.

  FIG. 5 shows the relationship between the angular velocity ω and the shutter speed Tv with respect to the background flow amounts α1, α2, and α3 described above. The horizontal axis in FIG. 5 indicates the angular velocity ω of the camera, and the vertical axis in FIG. 5 indicates the shutter speed Tv. 401 indicates the background flow amount α2, 402 indicates the background flow amount α1, and 403 indicates the shutter speed Tv when the background flow amount α3. Reference numeral 404 denotes a threshold value of the angular velocity ω, which is provided to prevent the shutter speed from being set to the long-second exposure (for example, 1 second or more) from the equation (1) when the angular velocity ω of the camera is small. Yes. If the angular velocity ω is equal to or lower than the threshold value 404, the shutter speed Tv is set to a limit 405 (for example, 1/15 second).

  In S212, the subject shake correction signal or camera shake correction signal calculated in S111 or S116 is acquired. In step S213, it is determined whether the product of the calculated shutter speed Tv and the calculated subject shake correction amount or camera shake correction amount falls within the drive range of the shake correction system. If the product of the calculated shutter speed Tv and the calculated subject shake correction amount or camera shake correction amount is within the driving range of the shake correction unit 112, the process proceeds to S215, and the calculated shutter speed Tv is set. On the other hand, if the product of the calculated shutter speed Tv and the calculated subject shake correction amount or camera shake correction amount is not within the driving range of the shake correction unit 112, the process proceeds to S214, and the obtained shutter speed Tv is changed.

  Here, the change of the shutter speed Tv will be described with reference to FIG. The horizontal axis in FIG. 6 indicates the zoom position, and the vertical axis in FIG. 6 indicates the drive amount [deg] of the shake correction system. Reference numeral 501 represents the relationship of the drive amount of the shake correction system at the zoom position, and 502 represents the drive limit of the shake correction system when the zoom position is Tele. For example, when the zoom position is Tele, the shutter speed Tv calculated in S209 is 1/20 second, and the subject shake correction signal calculated in S111 is 10 [dps], the drive amount necessary for shake correction is 0.5 [deg]. become. When the drive limit 502 is 0.3 [deg], the difference of 0.2 [deg] remains undeflected. Therefore, when the drive limit of the shake correction system is exceeded, the shutter speed Tv is changed to be within the drive limit 502 of the shake correction system (from 1/20 second to less than 1/30 second).

  As described above, by automatically setting the shutter speed that keeps the image plane movement amount on the imaging surface constant, even a photographer who is unfamiliar with panning shooting can easily perform panning shooting.

  In addition, since the shutter speed at the time of panning shooting can be set using an image blur correction system mounted on the imaging apparatus, the present invention can be realized without increasing the apparatus configuration. However, even an imaging apparatus that does not have an image blur correction system can set the shutter speed at the time of panning shooting by providing an angular velocity detection unit. In this case, the shutter speed at the time of panning shooting is set in S101 in FIG. 3 without being influenced by ON / OFF of camera shake correction. Similarly, even an imaging apparatus having an image blur correction system may perform panning when camera shake correction is OFF, and control the angular velocity detection unit 102 to drive and set the shutter speed at that time. May be.

  Further, the present invention supplies a program that realizes one or more functions of the above-described embodiment to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus execute the program. It can also be realized by a process of reading and executing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

  101: μCOM, 102: Angular velocity detection unit, 111: Shake correction system drive unit, 112: Shake correction unit, 113: Shake correction system position detection unit, 116: Motion vector detection unit, 118: Subject angular velocity calculation unit, 151: Zoom Unit: 152: zoom drive control unit, 153: aperture / shutter unit, 154: aperture / shutter drive control unit, 159: imaging unit, 165: operation unit

Claims (5)

Imaging means for photographing a subject image incident through the imaging optical system;
A setting means for setting a background sink amount in panning shooting;
In the panning shooting, the imaging is performed from the angular velocity detected by the detecting unit that detects the angular velocity of the shake and the focal length of the imaging optical system so as to be the amount of background flow set by the setting unit. An imaging device comprising: an acquisition unit that acquires an exposure time of the unit.   2. The imaging apparatus according to claim 1, wherein the setting unit sets the background flow amount by selecting one of a plurality of background flow amount levels set in advance.   The imaging apparatus according to claim 1, further comprising a limiting unit that limits the exposure time to the threshold value when the exposure time acquired by the acquisition unit is equal to or greater than a predetermined threshold value. Motion vector detection means for obtaining and outputting a motion vector from the difference between frames of the image output from the imaging means;
A correction unit that calculates a shake correction amount based on at least one of the angular velocity and the motion vector, and corrects the shake by driving the shake correction unit;
When the product of the exposure time and the shake correction amount does not fall within the drive range of the shake correction unit, the exposure time is changed so that the product falls within the drive range of the shake correction unit. The image pickup apparatus according to claim 1, wherein the image pickup apparatus is an image pickup apparatus. A method for controlling an imaging apparatus during panning shooting by an imaging unit that images a subject image incident through an imaging optical system,
A setting step in which the setting means sets a background sink amount;
From the angular velocity detected by the detecting means for detecting the angular velocity of the shake and the focal length of the imaging optical system so that the acquisition means has the amount of background flow set in the setting step, the imaging means A control method comprising: an acquisition step of acquiring the exposure time.

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